7937 Conference phone restart

[dshumake]

all,

In the last week or so my 7937 is doing a restart in the middle of a call.  No sure why and no changes has been me.

up to now I change the interface:

switchport access vlan xx

switchport voice vlan xx

So I removed the switch access vlan xx....

now it happen again with a VP on a call. 

[Manish Gogna]

Try a different switchport, change the connecting cable, and if the issue persists then you need to get a packet capture while reproducing the issue to actually see what is going wrong.

The 7937 firmware and cucm versions are also needed to check for any known issues.

Manish

[Amit Sharawat]

Hi,

Check if there is any flap in the switch-port on the phone, keep the phone connected with a PC for a wireshark capture to track the issue. Here is the document to collect captures from the back of the phone ( with CUCM )

https://supportforums.cisco.com/document/44741/collecting-packet-capture-cisco-ip-phone

If you are using phone with CME, then you can enable web access using following discussion:

https://supportforums.cisco.com/discussion/11293876/enable-web-access-cme-ip-phones

~Amit